Zusammenfassung der Ressource
Frage 1
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A body behaves as if its whole mass were concentrated at one point.
Frage 2
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Every body has a centre of [blank_start]mass[blank_end].
Frage 3
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For a human, the centre of [blank_start]mass[blank_end] is somewhere in the [blank_start]midddle[blank_end] and the [blank_start]vertical[blank_end] line from it must be within the [blank_start]area[blank_end] enclosed by its [blank_start]feet[blank_end] or else it will [blank_start]fall[blank_end] over.
Antworten
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mass
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middle
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vertical
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area
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feet
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fall
Frage 4
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The [blank_start]centre[blank_end] of mass of a regulary [blank_start]shaped[blank_end] body that has the same [blank_start]density[blank_end] throughout is at its [blank_start]centre[blank_end]. In other cases it can be [blank_start]found[blank_end] by an [blank_start]experiment[blank_end].
Antworten
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centre
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shaped
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density
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centre
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found
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experiment
Frage 5
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When the vertical line of a body's centre of mass doesn't go through the area of the body, the body will topple over.
Frage 6
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The [blank_start]stability[blank_end] of a body is [blank_start]increased[blank_end] by:
(i) [blank_start]lowering[blank_end] its centre of mass, and
(ii) [blank_start]increasing[blank_end] the area of its [blank_start]base[blank_end]
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stability
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increased
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lowering
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increasing
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base
Frage 7
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[blank_start]Unstable[blank_end] equilibrium is when a body moves [blank_start]further[blank_end] away from its [blank_start]previous[blank_end] position when it is slightly displaced and then released.
Antworten
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Unstable
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further
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previous
Frage 8
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[blank_start]Neutral[blank_end] equilibrium is when a body [blank_start]stays[blank_end] in its [blank_start]new[blank_end] position when [blank_start]displaced[blank_end].
Antworten
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Neutral
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stays
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new
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displaced
Frage 9
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[blank_start]Stable[blank_end] equilibirum is when a body is slightly displaced and when it is released it [blank_start]returns[blank_end] to its [blank_start]previous[blank_end] position.